Thread: Interval Notation Calculator

Interval Notation Calculator

This calculator translates the following inequality statements to interval notation:
* x < 5
* y <= 5
* z > 5
* a >= 5
* b < 5 or b > 20
* 0 <= c < 5

Shortcut commands from the search engine for all of the above and practice problem generator are available as well.
All 26 variables are included.

Let me know if you would like enhancements or updates.

This lesson has been enhanced to allow for outside multiplier constants (a)

ax <= c
ax < c
ax >= c
ax > c

I'll add more enhancements in the future.

Update 3:

The following expressions are now available for our interval notation lesson and also able to be entered directly into the search engine:
|ax|>=c where a and c are positive or negative integers and x is any variable (a-z)

Examples are |w|<3 or |-4y|>=8.

Update 4:

This lesson now does reverse interval notation back to inequality statements such as (-7,5] which can also be entered directly as a shortcut.

Update 5:

This lesson now handles set builder notation such as {x|x>=1}

It also handles word representations of interval notation such as 2 is less than or equal to x is less than 12
w is greater than 8
y is less than or equal to 4

These can be entered as shortcuts in the search engine if you are not on this lesson.

Update 6:

More enhancements for interval notation and number types which can be entered as shortcuts:

integers less than or equal to 27
whole numbers greater than 3
natural numbers less than 10

Update 7:

Interval notation not equal to:

x<>6
y not equal to 3